Detachable commutator



(No Model.) 2 Sheets-Sheet 2.

C. H. GAYLORD.

DETAGHABLE COMMUTATOR.

, Patented June 14, 1892.

fnl/Emmi UNITED STATES PATENT OFFICE.

CHARLES ll. GAYLORD, OF CLEVELAND, OHIO.

DETACHABLE COMMUTATOR.

SPECIFICATION forming part of Letters Patent No. 477,175, dated June 14, 1892..

Application iiled December 1'7, 1891. Serial No. 415,420. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES H. GAYLOED, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and Improved Detachable Commutator and Armature, of which the following is a full, clear, and complete description thereof.

The nature of my invention relates to the formation or construction of a detachable commutator and armature for electric motors or dynamos, said commutator being so constructed as to be readily detached from the armature when it becomes worn without disconnecting the wires of said armature, thereby expediting the repairing of the motor and lessening the expense of same.

That the invention may be seen and fully understood by others familiar with the art, reference will be had to the following speci tication and annexed drawings, forming part thereof.

Figure l is a View of a portion of an armature and com mutator detached from the other necessary parts ofthe motor. Fig. 2 is a longitudinal section on line rx, Fig. l, showing the armature in simple outline. Fig. 3 is an interior end view of my improved commutator. Figs. 4, 5, G, and 7are views of detached sections hereinafter explained. Figs. 5, (3, and 7 are enlarged.

Like letters of reference designate like parts in the drawings and specification.

It is a well-known fact to all familiar with the art that heretofore it has been necessary to cut or disconnect the wires of the armature from the commutator in order to provide the motor or dynamo with a new cominutator after the old one has become worthless from the Wear of the brushes, thereby causing considerable delay and expense. I have by my invention provided foror reduced to a great extent this delay and expense by producing a detachable commutator, as hereinafter described.

In Figs. l and 2 the armature is represented by a, (only shown in outline in Fig. 2,) which is connected with the commutator in the ordinary manner by solder or other suitable means.

The commutator is constructed, as shown, of a number of metallic sections b of substantially the form shown in Figs. 4 and 5, Fig. 5 being a perspective view of one of said sec tions detached. These pieces or sections are wedge-shaped, and when placed together in the manner required and as shown in Fig. Llform the circular interior head ofthe commutator to which the wires of the armature are attached. A female thread c is cut on the .collar formed by the sections b, as shown in Figs. 5 and 7. Other metallic sections d, of cs sentially the form shown in Figs. 2, G, and 7, (Fig. 6 beinga perspective view,) when placed together, as required, form a cylinder. This cylinderforins the bodyor portion of the commntator on which the wear of the brushes comes. Said brushes are indicated in Fig. l by dot-ted lines c. On the interior terminal of the cylinder formed by the pieces CZ is a male thread f, which corresponds to the female thread c. The head of the commutator or that portion formed by the section Z) is insulated by any known non-conducting material, as shown at g, Figs. l, 3, and 4. The body or cylinder ofthe commutator is also insulated between the pieces d, (indicated at 7L, Figs. l and 6.) The non-conducting disks andjfFig. 2,bind the sections l togetherand at the sanie time insulate them from the shaft 7e, to which the eommutator is necessarily made fast by means of the jacket or sleeve Z and nuts m and n. The sections b and their insulation g are held in their required position by a nonconducting disk or cap 0, a screw p passing through said capinto each separate section b. The armature a being con nected with the head of the coinmutator, the cylinder of said commutator can readily be screwed thereto, the sections (l coming in electrical contact with the sections Z1, and the insulation 7L-connecting with the insulation g.

As shown by dotted lines e in Fig. l, the brushes bear ou the cylinder orportion of the commutator composed ofthe sections d. Consequently the wear is on said cylinder, which can readily be removed and replaced by a new one at a comparatively small expense, owing to the cylinder being threaded into the collar to which the armature is connected, it not being necessary, as heretofore, to disconnect the entire commutator by cutting or disconnect ing the wires of the armature.

The female thread may be on the cylinder IOO and the male thread on the Collar. However, the construction shown in drawings is preferable.

Vhat l claim, and desire to secure by Letters Patent, is-

l. A detachable eommutator and armature consisting of metallieseetions d, suitably insulated,of aeylindrieal form,one terminal of which having a male thread, in combination with a eollar b, provided with a female thread for engagement and disengagement with said male thread of the cylinder, with the Collar arranged in eleetrieal Contact with the armature, substantially as and for the purpose set forth.

2. In combination with the armature of an electric motor or dynamo, a detachable commutator consisting oi two or more metallic sections forming a cylinder or sleeve suitably insulated and threaded into a Collar eoin posed of two or more vsections insulated and eonneeted with the wires of the armature, said Cylinder being in electrical Contact with said collar arranged in eo-operative relation with the brushes, substantially as and for the purpose specified.

In an adjustable eoininutator and arma ture, the cylinder or sleeve 0f the said eoinniutator threaded at one terminal thereof with the eollar l), having a threaded eonneetion with the said sleeve, in combination with the armature arranged in 'electrical eonneetion with the eommutator, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES Il. GAYLORD, lVitnesses:

E. F. HOPKINS, W. H. Brummen 

